Device for prolonging service life of blast furnace runner dust hood

Abstract

The utility model discloses a device for prolonging the life of blast furnace runner dedusting cover, including dedusting pipe, bolt, top plate and cover body, the top plate is provided in the upper end inside cover body, bolt all screw-thread fit is in the one end of top plate, and the upper end of bolt is in the screw-thread fit with the upper end of cover body, the lower end of top plate is connected with spring, and the lower end of spring is connected with support plate, a vertical rod is fixed to the position, corresponding to the middle of the spring, of the lower end of the top plate, a limiting block is fixed to the lower end of the vertical rod, receding grooves are formed in the two sides of the lower end of the supporting plate and slidably connected with the vertical rod, a temperature measuring opening is formed in the side portion of the cover body, slag flowing openings are formed in the front portion and the back portion of the cover body, and a dust removal pipe is arranged at the upper end of the side portion of the cover body. The service life of the dust hood is prolonged, the dust hood is convenient to install, and the production operation efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of dust removal covers for iron flow channels of blast furnaces, in particular to a device for prolonging the service life of dust removal covers for iron flow channels of blast furnaces. Background Art

[0002] The iron flow groove, main groove, slag groove and gate of modern blast furnace will produce a certain amount of smoke and dust during the slag and iron process. Based on environmental protection requirements, dust hoods are installed on the top. The smoke and dust generated during the iron tapping process enter the dust removal pipe from the dust hood through the suction force of the dust removal fan, and are discharged into the atmosphere after bag dust removal, thereby protecting the environment. The shapes and materials of different parts such as the iron flow groove, main groove, slag groove and gate are different. The above parts use dust hoods of different materials according to their working environment and size. The dust hood above the main groove gate needs to withstand the high temperature of slag and iron and prevent the slag and iron particles ejected from the iron mouth during iron tapping from spraying onto the furnace. Usually, the dust hood at this part uses 5mm steel plates welded as a frame, rivet hooks are welded inside the frame, and then refractory materials are poured on the rivet hooks. Finally, a steel structure of the same material is installed at the front end of this dust hood (close to the iron mouth) to block the slag and iron particles ejected from the iron mouth. However, the dust hood using this shape is subjected to high temperature and the erosion of slag and iron, and the refractory material inside the steel structure will fall off after a certain period of use, and the entire structure needs to be re-cast and repaired, resulting in increased costs.

[0003] In view of this drawback, a new type of dust hood is invented, which can extend the service life and thus reduce the cost of ironmaking. Utility Model Content

[0004] The utility model aims to provide a device for prolonging the service life of a dust removal cover of an iron flow channel of a blast furnace, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a device for extending the service life of a dust removal hood of a blast furnace iron flow channel, comprising a dust removal pipe, bolts, a top plate and a hood body, wherein the top plate is arranged at the upper end of the inner part of the hood body, the bolts are threadedly engaged with one end of the top plate, and the upper end of the bolts is threadedly engaged with the upper end of the hood body, the lower end of the top plate is connected to a spring, and the lower end of the spring is connected to a support plate, a vertical rod is fixed at the middle of the lower end of the top plate corresponding to the spring, and a limiting block is fixed at the lower end of the vertical rod, and clearance grooves are arranged on both sides of the lower end of the support plate, and the clearance grooves are slidably connected to the vertical rods.

[0006] Preferably, a temperature measuring port is provided on the side of the cover body, and a slag flow port is provided on the front and back of the cover body.

[0007] Preferably, the dust removal pipe is arranged at the upper end of the side of the cover body, and a dust guide port is provided at one end of the dust removal pipe. Under the action of the fan, the dust is introduced into the dust removal pipe through the dust guide port, and then guided out for bag dust removal and then discharged, which is beneficial to environmental protection.

[0008] Preferably, a limiting ring is provided on the outside of the dust guide port, and a fixing rod is fixed between the side of the limiting ring and the upper end of the inner wall of the cover body. The cover body limits and lifts the dust guide port through the fixing rod and the limiting ring, which is conducive to the stability of the position of the dust guide port.

[0009] Preferably, connecting plates are provided on both sides of the upper end of the cover body, and hooks are fixed to the front and back of the cover body.

[0010] Preferably, an oblique support is fixed between the side of the connecting plate and the upper end of the cover body, and a connecting rod is fixed between the oblique supports. The connecting rod can strengthen the connection between the oblique supports and make the connection between the cover body and the connecting plate firm, so that the dust collector has a good protective effect and is conducive to improving production operation efficiency.

[0011] Compared with the prior art, the utility model has the following beneficial effects: prolonging the service life of the dust removal cover, facilitating installation, and improving production efficiency;

[0012] (1) The support plate is directly opposite to the iron outlet. When the slag and iron particles are ejected from the iron outlet, they will be squeezed onto the support plate. Since the spring is elastic, it will be compressed to avoid direct impact on the cover body. Therefore, the cover body is buffered and protected through the top plate, thereby extending the service life of the dust hood.

[0013] (2) By turning the bolts, the top plate can be installed at the upper end of the cover body. The limit block can prevent the support plate from falling off. The support plate is limited by the clearance groove and the opposing rod, which is conducive to the stable lifting of the support plate and avoids the misalignment of the spring, making it difficult to push the support plate back to its original position. The structure is simple, the installation is convenient, and the manufacturing cost is low.

[0014] (3) The connecting rod can strengthen the connection between the oblique supports, and at the same time make the connection between the hood body and the connecting plate stable, so that the dust hood has a good protective effect and is conducive to improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the main cross-sectional structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the main structure of the utility model;

[0017] Figure 3 For the utility model Figure 1 The enlarged structural diagram at A in the middle;

[0018] Figure 4For the utility model Figure 1 The enlarged structural diagram at B in the middle;

[0019] Figure 5 It is a side view structural schematic diagram of the utility model;

[0020] In the figure: 1. connecting plate; 2. oblique support; 3. cover body; 4. bolts; 5. top plate; 6. dust removal pipe; 7. temperature measuring port; 8. slag flow port; 9. support plate; 10. hook; 11. connecting rod; 12. fixing rod; 13. limiting ring; 14. dust guide port; 15. vertical pole; 16. spring; 17. clearance groove; 18. limiting block. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-5 The utility model provides an embodiment: a device for extending the life of a dust removal cover of a blast furnace iron flow groove, comprising a dust removal pipe 6, a bolt 4, a top plate 5 and a cover body 3, a temperature measuring port 7 is arranged on the side of the cover body 3, a slag flow port 8 is arranged on the front and back of the cover body 3, a spring 16 is connected to the lower end of the top plate 5, and a support plate 9 is connected to the lower end of the spring 16, a vertical rod 15 is fixed to the middle of the lower end of the top plate 5 corresponding to the spring 16, connecting plates 1 are arranged on both sides of the upper end of the cover body 3, and hooks 10 are fixed to the front and back of the cover body 3;

[0023] When in use, the cover body 3 can be placed on the tap hole by hanging it with the hook 10 and fixing it with the connecting plate 1 in various ways, and the support plate 9 is directly opposite to the tap hole. When the slag and iron particles are ejected from the tap hole, the slag and iron particles will be squeezed to the support plate 9. Since the spring 16 is elastic, it will be compressed to avoid direct impact on the cover body 3. Therefore, the cover body 3 is buffered and protected by the top plate 5, thereby extending the service life of the dust removal cover;

[0024] The top plate 5 is arranged at the upper end of the cover body 3, and the bolts 4 are threadedly matched with one end of the top plate 5, and the upper end of the bolts 4 is threadedly matched with the upper end of the cover body 3;

[0025] When in use, the top plate 5 can be installed on the upper end of the cover body 3 by screwing the bolt 4, which has a simple structure, convenient installation and low manufacturing cost;

[0026] A limit block 18 is fixed at the lower end of the vertical rod 15, and a clearance groove 17 is provided on both sides of the lower end of the support plate 9, and the clearance groove 17 is slidably connected with the vertical rod 15;

[0027] When in use, the limit block 18 can prevent the support plate 9 from falling off. The support plate 9 passes through the clearance groove 17 and the opposing rod 15 to limit the support plate 9, which is conducive to the stable lifting of the support plate 9 and avoids the misalignment of the spring 16, making it difficult to push the support plate 9 back to its original position.

[0028] The dust removal pipe 6 is arranged at the upper end of the side of the cover body 3, and a dust guide port 14 is arranged at one end of the dust removal pipe 6;

[0029] When in use, smoke and dust are guided into the dust removal pipe 6 through the dust guide port 14 under the action of the fan, and then guided out for bag dust removal and then discharged, which is beneficial to protecting the environment;

[0030] A limit ring 13 is disposed outside the dust guide port 14, and a fixing rod 12 is fixed between the side of the limit ring 13 and the upper end of the inner wall of the cover body 3;

[0031] When in use, the cover body 3 limits and lifts the dust guide port 14 through the fixing rod 12 and the limiting ring 13, which is conducive to the stability of the position of the dust guide port 14;

[0032] An oblique support 2 is fixed between the side of the connecting plate 1 and the upper end of the cover body 3, and a connecting rod 11 is fixed between the oblique supports 2;

[0033] When in use, the connecting rod 11 can reinforce the connection between the oblique supports 2, and also make the connection between the cover body 3 and the connecting plate 1 stable, so that the dust removal cover has a good protective effect, which is conducive to improving the production efficiency;

[0034] When the embodiment of the present application is in use: first, the cover body 3 can be placed on the iron outlet by hanging it with the hook 10 and fixing it with the connecting plate 1. In addition, the connecting rod 11 can strengthen the connection between the inclined supports 2, and make the connection between the cover body 3 and the connecting plate 1 stable, so that the dust removal cover has a good protective effect, which is beneficial to improving the production operation efficiency. Subsequently, the bolt 4 is turned to install the top plate 5 on the upper end of the cover body 3. The structure is simple, the installation is convenient, and the manufacturing cost is low. Then, the support plate 9 is facing the iron outlet. When the slag and iron particles are ejected from the iron outlet, the slag and iron particles will be squeezed onto the support plate 9. Since the spring 16 is elastic, the support plate 9 will be The cover body 3 is compressed to avoid direct impact on the cover body 3. Thus, the cover body 3 is buffered and protected by the top plate 5, and the service life of the dust hood is extended. In addition, the limit block 18 can prevent the support plate 9 from falling off. The support plate 9 is limited by the yield groove 17 and the opposite rod 15, which is beneficial to the stable lifting of the support plate 9 and avoids the misalignment of the spring 16, which makes it difficult to push the support plate 9 to reset. At the same time, the smoke is introduced into the dust removal pipe 6 through the dust guide port 14 under the action of the fan, and then guided out for bag dust removal and then discharged, which is beneficial to protecting the environment. In addition, the cover body 3 limits and lifts the dust guide port 14 through the fixing rod 12 and the limit ring 13, which is beneficial to the stable position of the dust guide port 14.

Claims

1. A device for extending the life of a dust removal cover of a blast furnace iron flow channel, characterized in that: The utility model comprises a dust removal pipe (6), a bolt (4), a top plate (5) and a cover body (3), wherein the top plate (5) is arranged at the upper end inside the cover body (3), the bolts (4) are all threadedly engaged with one end of the top plate (5), and the upper end of the bolts (4) is threadedly engaged with the upper end of the cover body (3), the lower end of the top plate (5) is connected with a spring (16), and the lower end of the spring (16) is connected with a support plate (9), the lower end of the top plate (5) is fixed with a vertical rod (15) corresponding to the middle of the spring (16), and the lower end of the vertical rod (15) is fixed with a limiting block (18), and the two sides of the lower end of the support plate (9) are provided with a clearance groove (17), and the clearance groove (17) is slidably connected with the vertical rod (15).

2. The device for extending the service life of the dust removal cover of the blast furnace iron flow channel according to claim 1, characterized in that: The side of the cover body (3) is provided with a temperature measuring port (7), and the front and back of the cover body (3) are both provided with slag flow ports (8).

3. The device for extending the service life of the dust removal cover of the blast furnace iron flow channel according to claim 1, characterized in that: The dust removal pipe (6) is arranged at the upper end of the side of the cover body (3), and one end of the dust removal pipe (6) is provided with a dust guide port (14).

4. The device for extending the service life of the dust removal cover of the blast furnace iron flow channel according to claim 3 is characterized in that: A limiting ring (13) is arranged outside the dust guide port (14), and a fixing rod (12) is fixed between the side of the limiting ring (13) and the upper end of the inner wall of the cover body (3).

5. The device for extending the service life of the dust removal cover of the blast furnace iron flow channel according to claim 4, characterized in that: Connecting plates (1) are provided on both sides of the upper end of the cover body (3), and hooks (10) are fixed to the front and back of the cover body (3).

6. The device for extending the service life of the dust removal cover of the blast furnace iron flow channel according to claim 5, characterized in that: An oblique support (2) is fixed between the side portion of the connecting plate (1) and the upper end of the cover body (3), and a connecting rod (11) is fixed between the oblique supports (2).

Images